I decided to upgrade my car's front speakers and everything worked okay in the beginning but the stereo stopped producing sound after a while. After a lot of tinkering I found out that the amp wasn't working properly so I decided to buy a new stereo.

This time I installed my stereo and tested everything was working properly before I put everything back together, and it was. However, when I put all the panels back and turned on the car, there was no sound. After removing everything once again and testing each individual connection I found out that the speakers were not working when inside the doors but worked fine outside. I decided to rotate them inside the door and they are now working fine.

My question is, what could have actually happened? My theory has something to do with the magnetic field that the speaker produces, but then again I have no idea.